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** Copyright (C) 2016 The Qt Company Ltd.
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** This file is part of Qt Creator.
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** GNU General Public License Usage
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** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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#pragma once

#include <clangsupport_global.h>

#include "processhandle.h"

#include <utils/temporarydirectory.h>

#include <QStringList>

#include <future>
#include <memory>

QT_BEGIN_NAMESPACE
class QTemporaryDir;
class QProcessEnvironment;
QT_END_NAMESPACE

namespace ClangBackEnd {

class CLANGSUPPORT_EXPORT ProcessCreator
{
public:
    ProcessCreator();

    void setTemporaryDirectoryPattern(const QString &temporaryDirectoryPattern);
    void setProcessPath(const QString &m_processPath);
    void setArguments(const QStringList &m_arguments);
    void setObserver(QObject *m_observer);

    std::future<QProcessUniquePointer> createProcess() const;

    const QTemporaryDir &temporaryDirectory() const;
    void resetTemporaryDirectory();

private:
    void checkIfProcessPathExists() const;
    void checkIfProcessWasStartingSuccessful(QProcess *process) const;
    [[noreturn]] void dispatchProcessError(QProcess *process) const;
    void postProcessStartedEvent() const;
    [[noreturn]] void throwProcessException(const QString &message) const;

    QProcessEnvironment processEnvironment() const;

private:
    std::unique_ptr<Utils::TemporaryDirectory> m_temporaryDirectory;
    QString m_processPath;
    QString m_temporaryDirectoryPattern;
    QStringList m_arguments;
    QObject *m_observer = nullptr;
};

} // namespace ClangBackEnd
